BREAKING DOWN THE KTM SIZING
Here is a quick refresher of what each KTM engine and chassis character is like from when we tested them earlier in the year.
250 SX-F: The 250 SX-F doesn’t have a big bottom-end hit but churns out mid- to top-end horsepower like no other 250 in the class. You can’t lug it as much as other 250s, but if you are a screamer and like to get the most out of each gear, this might be the right engine character for you. The chassis is light and nimble and is a very capable cornering machine. The fork can get a little soft at times for a heavier rider, but overall balance of the KTM 250 SX-F is comfortable and plush.
350 SX-F: More torque than a 250 SX-F out of corners, but the 350 pulls similarly to the 250 in the mid- to top-end power. The 350 can be lugged a little more than the 250 yet still prefers to be revved out like the 250. The chassis is still very 250-esque feeling and can be flicked around just like its little brother. The fork, however, is not quite as comfortable through the mid-stroke like the 250 and 450 and can be somewhat hard to dial in at certain tracks when there are bigger braking bumps. Vibration is not an issue when the engine is spooled up.
450 SX-F: The Big Bertha of this group feels super light compared to other 450s in its class. The engine character is smooth off the bottom, but you are able to carry second gear longer on this 450 than all other competitors in its class. Mid- to top-end is more than you will need but will never rip your arms out of their sockets while increasing the throttle. The WP suspension has enough movement and hold-up for an aggressive rider but is also stiff enough for a slower rider who may not be able to clear all of the obstacles on the track.